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/*
Copyright (C) 2016-2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
DCP-o-matic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file test/j2k_video_bit_rate_test.cc
* @brief Test whether we output whatever J2K bandwidth is requested.
* @ingroup feature
*/
#include "test.h"
#include "lib/dcp_content_type.h"
#include "lib/film.h"
#include "lib/image_content.h"
#include "lib/video_content.h"
#include <boost/test/unit_test.hpp>
#include <fmt/format.h>
using std::make_shared;
using std::string;
static void
check (int target_bits_per_second)
{
Cleanup cl;
int const duration = 10;
string const name = "bandwidth_test_" + fmt::to_string(target_bits_per_second);
auto content = make_shared<ImageContent>(TestPaths::private_data() / "prophet_frame.tiff");
auto film = new_test_film(name, { content }, &cl);
film->set_video_bit_rate(VideoEncoding::JPEG2000, target_bits_per_second);
content->video->set_length (24 * duration);
make_and_verify_dcp (
film,
{
dcp::VerificationNote::Code::MISSING_FFMC_IN_FEATURE,
dcp::VerificationNote::Code::MISSING_FFEC_IN_FEATURE,
dcp::VerificationNote::Code::NEARLY_INVALID_PICTURE_FRAME_SIZE_IN_BYTES,
dcp::VerificationNote::Code::INVALID_PICTURE_FRAME_SIZE_IN_BYTES,
dcp::VerificationNote::Code::INVALID_JPEG2000_TILE_PART_SIZE,
},
target_bits_per_second <= 250000000,
target_bits_per_second <= 250000000
);
auto test = find_file(film->dir(film->dcp_name()), "j2c_");
double actual_bits_per_second = boost::filesystem::file_size(test) * 8.0 / duration;
/* Check that we're within 85% to 115% of target on average */
BOOST_CHECK ((actual_bits_per_second / target_bits_per_second) > 0.85);
BOOST_CHECK ((actual_bits_per_second / target_bits_per_second) < 1.15);
cl.run();
}
BOOST_AUTO_TEST_CASE (bandwidth_test)
{
check (50000000);
check (100000000);
check (150000000);
check (200000000);
check (250000000);
check (300000000);
check (350000000);
check (400000000);
check (450000000);
check (500000000);
}
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